This is the Western Robotics Hercules Super BEC PRO. The Hercules Super Battery Eliminator Circuit PRO features a Battery Eliminator Circuit that is capable of handling extreme high voltages and is made with high quality components that can withstand outstanding high current loads of 16 Amps continuous / 22 Amps peak! The Hercules Super Battery Eliminator Circuit PRO is a glitch free, high efficiency, high power switching voltage regulator designed to work with all popular brands of R/C receivers and servos. It provides safe and consistent power to your R/C receiver and servo(s) that eliminates the need for a separate battery source.

The Hercules Super will boost performance on your R/C model by reducing the overall weight while maintaining a high current output from high voltage sources up to a 18s LiPo battery (75.6V). The Hercules Super BEC PRO has a built in power bus system that allows multiple servos to be plugged directly into the Hercules unit. This will eliminate any unnecessary voltage drops that can occur with standard receiver connections that share one power connection with multiple servos that require high current demands. Technically it is not possible to deliver more than 10 amps through one or two servo type connectors, therefore the bus system is a must have for real current delivery.

I was having issues with Vbar brownouts with certain brand servos. I have always used good quality 2s lipos for my receiver power as that was supposed to be the best power source for power hungry HV servos. In this case, the power was there, but apparently these servos produce high back EMF spikes that were causing the controller to shutdown.

I tried all available remedies to stop the problem, and none of them worked. I then tried the Hercules Super BEC Pro and am delighted to report that it solved my power issues. I don't know a lot about electronics, but there is circuitry inside the split bus system that prevents these back EMF spikes, and the system works flawlessly. Setup is simple, all you need to do is connect the supplied set of cables for the cyclic and tail servos into one side of the split bus, and plug the corresponding servos into the other side. Set your output voltage and you are ready to go.

The WR BEC is probably a bit big to use on anything much smaller than a 600 sized heli, but is no bigger and is lighter than my existing 2s 2250mah lipo. I run it off one of my two 6s flight packs and have it set for 8.2 volts. I really don't see any difference in pack voltage due to the BEC at the end of a flight.

I will start to transition all of my power systems over to the WR Hercules Super BEC Pro in the near future.)